expand (2x+4)(2x-5)with suitable identities
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Answer:
(2x + 4)(2x - 5)
Using identity (x + a)(x - b)= x² + (a - b)x - ab
= (2x)² + (4 - 5)2x - 4 × 5
= 4x² - 2x - 20(Ans)
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